Best items for Yan are: Leviathan, Gilded Greaves, Spear of Longinus, Omni Arms, Fenrirs Tooth, Blade of Eterenity.
Best Arcana for Yan are: 10 Onslaught, 10 Guerrilla, 10 Skewer.
Best Rune for Yan are: Lokheim + Human.
Passive: Flash of Inspiration
When Yan uses skill 1 or skill 2, he increases his energy by one stack. His next normal attack is enhanced at two energy stacks to produce a variety of additional effects dependent on the most recent skill used. While assaulting an adversary, he heals 6% (+1% for every 80 extra attack damage) of his maximum HP and for 4 seconds, his attack speed is increased by 40%–68% (increases with level). Attacking foes who are not heroes will reduce these benefits by half.
Skill 1: Splash Ink
Give enemies inside a fan-shaped radius 250 physical damage (+100% of AD) and 1.5 seconds of delay.
The corresponding passive enhanced regular attack causes 200 more (+50% of AD) physical damage to opponents and knocks them down for 0.5 seconds after charging and jumping up. During this period, you can move. The damage this attack deals to wildlings rises by 100%.
Skill 2: Coiling Dragon
Yan moves in an arc while having 65% damage mitigation and super armor, dishing 150 (+75% of AD) physical damage to enemies in his path.
A second phase of skill 2 is activated when he runs near foes, dealing an additional 100 physical damage and activating the corresponding passively boosted normal attack (this phase has a separate cooldown and does not grant energy).
Skill 3: Crushing Mountain
Yan breaks his seal, acquiring super armor, and his casting damage is reduced by 50%. After 1 second, he activates the second stage of his ultimate, dealing 200 damage (+80% of AD) to nearby opponents before being strengthened for 8 seconds (his ultimate acquires the effects of earlier levels at each level).